4128780 has 24 divisors (see below), whose sum is σ = 11560752. Its totient is φ = 1100992.

The previous prime is 4128767. The next prime is 4128781. The reversal of 4128780 is 878214.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (4128781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34347 + ... + 34466.

It is an arithmetic number, because the mean of its divisors is an integer number (481698).

Almost surely, 2^4128780 is an apocalyptic number.

It is an amenable number.

4128780 is an abundant number, since it is smaller than the sum of its proper divisors (7431972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4128780 is a wasteful number, since it uses less digits than its factorization.

4128780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68825 (or 68823 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 4128780 is about 2031.9399597429. The cubic root of 4128780 is about 160.4256893409.

The spelling of 4128780 in words is "four million, one hundred twenty-eight thousand, seven hundred eighty".